Sorry I wasn't clear. This is not the same issue, it has the same symptoms. This one is highly similar because with the same testcase (removing contrib.auth from INSTALLED_APPS) you obtain the same error output. But this time this is because of "contenttypes" app dependency to "auth" rather than "messages" 's one which was fixed for ticket #14632.

Maybe a better ticket would be "better dependency management between apps for the testing framework" instead of creating some tickets and fixes which just hide the error message?